User's Manual
395
Appendix 2 HDD Capacity Calculation
Calculate total capacity needed by each device according to video recording (video recording
type and video file storage time).
1. According to Formula (1) to calculate storage capacity
that is the capacity of each
channel needed for each hour, unit Mbyte.
In the formula:
means the bit rate, unit Kbit/s
2. After video time requirement is confirmed, according to Formula (2) to calculate the storage
capacity
, which is storage of each channel needed unit Mbyte.
In the formula:
means the recording time for each day (hour)
means number of days for which the video shall be kept
3. According to Formula (3) to calculate total capacity (accumulation)
that is needed for all
channels in the device during
scheduled video recording
.
In the formula:
means total number of channels in one device
4. According to Formula (4) to calculate total capacity (accumulation)
that is needed for all
channels in device during
alarm video recording (including motion detection)
.
In the formula:
means alarm occurrence rate
Содержание NVR41 series
Страница 1: ...Dahua Network Video Recorder User s Manual ZHEJIANG DAHUA VISION TECHNOLOGY CO LTD V4 5 1...
Страница 103: ...User s Manual 89 The following figure is for reference only Figure 3 51...
Страница 122: ...User s Manual 108 Figure 4 21 Step 3 Set parameters See Table 4 5...
Страница 139: ...User s Manual 125 Figure 4 33 Step 3 Set record type See Figure 4 34...
Страница 295: ...User s Manual 281 Figure 4 182 Figure 4 183...
Страница 388: ...User s Manual 374 Figure 4 277 Step 2 Click Add The Add interface is displayed See Figure 4 278...
Страница 395: ...User s Manual 381 Figure 4 285 Figure 4 286 Remote Control Press the power button on the remote for at least 3 seconds...
Страница 416: ...User s Manual...